Setups
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Gearing
Stock gearing for the Reflex Racing FX28, with common pinions and their ratios.
| Pinion | Spur ÷ pinion | FDR |
|---|---|---|
| 6T | 8.83 | 8.83 |
| 7T | 7.57 | 7.57 |
| 8T | 6.63 | 6.63 |
| 9T | 5.89 | 5.89 |
| 10T | 5.30 | 5.30 |
| 11T | 4.82 | 4.82 |
| 12T | 4.42 | 4.42 |
| 13T | 4.08 | 4.08 |
| 14T | 3.79 | 3.79 |
What pinion should I run?
Tell us your motor and track and get a starting pinion for the Reflex Racing FX28, with the range racers in the class run.
Get a recommendation →Shop pinion gears at AMain →What pinion gear should I use on the Reflex Racing FX28?
It depends on your motor and the track. A hotter motor (lower turns, higher KV) takes a smaller pinion; a tight track wants a lower gear than an open one. Start near the middle of the pinions the FX28 shipped with, run a few minutes, and check motor temperature before going up a tooth. The So Dialed Pinion Recommender gives a starting pinion for your motor where we have class data.
What is the internal ratio (transmission ratio) of the Reflex Racing FX28?
The FX28 has an internal ratio of 1:1. Final drive ratio = spur ÷ pinion × 1. With the stock 53T spur, a 6T pinion gives an FDR of 8.83 and a 14T gives 3.79.
How many teeth is the stock spur gear on the Reflex Racing FX28?
53 teeth. Changing the spur moves every pinion's ratio at once; most racers leave the spur and tune with the pinion.
Kit setup
Kit shock setup. Part numbers link to AMain.
- Front
- Hard #RX28A-17-HS →
- Center
- Med #FX28A-07 →
- Side
- Soft #RX28A-03 →
What springs does the Reflex Racing FX28 come with?
The kit springs are Hard (#RX28A-17-HS) front, Med (#FX28A-07) center, Soft (#RX28A-03) side. Stiffer springs suit high grip and big jumps; softer springs add grip on slick or bumpy tracks.
Setup Help
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Setup App & Race Log
Your Reflex Racing FX28 is in the RC Setup App
Save every setup change you make to your Reflex Racing FX28, get AI tuning answers for that exact car, and log your races — at the track or back in the pits.
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